ACGL · Company KPIs

Arch Capital (ACGL) KPIs

Combined ratio, Book value per common share, Net premiums written, Mortgage insurance in force (IIF). As reported in SEC filings, with the source line for each figure.

Combined ratio

82.5% for the period ended Sep 30, 2026

The filings read for this page do not define this measure.

Combined ratio, as first reported, with the line it was read from
Period ended	Figure	Filing text
Sep 30, 2026	82.5%	Combined ratio · 82.5% · 83.5% · 81.7% · 80.6% · 79.8% · 82.6% · 83.6%8-K filed 2026-10-27
Jun 30, 2026	83.5%	Combined ratio · 83.5% · 81.7% · 80.6% · 79.8% · 81.2% · 82.7% · 85.5%8-K filed 2026-07-28
Mar 31, 2026	81.7%	Combined ratio · 81.7% · 80.6% · 79.8% · 81.2% · 90.1%8-K filed 2026-04-28
Dec 31, 2025	80.6%	Combined ratio · 80.6% · 79.8% · 81.2% · 90.1% · 85.0% · 82.8% · 82.5%8-K filed 2026-02-09
Sep 30, 2025	79.8%	Combined ratio · 79.8% · 81.2% · 90.1% · 85.0% · 86.6% · 83.6% · 81.6%8-K filed 2025-10-27
Jun 30, 2025	81.2%	Combined ratio · 79.8% · 81.2% · 90.1% · 85.0% · 86.6% · 83.6% · 81.6%8-K filed 2025-10-27
Mar 31, 2025	90.1%	Combined ratio · 79.8% · 81.2% · 90.1% · 85.0% · 86.6% · 83.6% · 81.6%8-K filed 2025-10-27
Dec 31, 2024	85%	Combined ratio · 79.8% · 81.2% · 90.1% · 85.0% · 86.6% · 83.6% · 81.6%8-K filed 2025-10-27

Book value per common share

$67.9 at Sep 30, 2026

The filings read for this page do not define this measure.

Book value per common share, as first reported, with the line it was read from
Period ended	Figure	Filing text
Sep 30, 2026	$67.9	Book value per common share (1) · $67.90 · $68.04 · $66.19 · $65.11 · $62.328-K filed 2026-10-27
Jun 30, 2026	$68.04	Book value per common share (1) · $68.04 · $66.19 · $65.11 · $62.32 · $59.178-K filed 2026-07-28
Mar 31, 2026	$66.19	Book value per common share (1) · $66.19 · $65.11 · $62.32 · $59.17 · $55.158-K filed 2026-04-28
Dec 31, 2025	$65.11	Book value per common share (1) · $65.11 · $62.32 · $59.17 · $55.15 · $53.118-K filed 2026-02-09
Sep 30, 2025	$62.32	Book value per common share (1) · $62.32 · $59.17 · $55.15 · $53.11 · $57.008-K filed 2025-10-27
Jun 30, 2025	$59.17	Book value per common share (1) · $62.32 · $59.17 · $55.15 · $53.11 · $57.008-K filed 2025-10-27
Mar 31, 2025	$55.15	Book value per common share (1) · $62.32 · $59.17 · $55.15 · $53.11 · $57.008-K filed 2025-10-27
Dec 31, 2024	$53.11	Book value per common share (1) · $62.32 · $59.17 · $55.15 · $53.11 · $57.008-K filed 2025-10-27

Net premiums written

$3.85B for the period ended Sep 30, 2026

The filings read for this page do not define this measure.

Net premiums written, as first reported, with the line it was read from
Period ended	Figure	Filing text
Sep 30, 2026	$3.85B	Net premiums written · 3,845 · 4,049 · 4,348 · 3,649 · 3,964 · 12,242 · 12,8278-K filed 2026-10-27
Jun 30, 2026	$4.05B	Net premiums written · 4,049 · 4,348 · 3,649 · 3,964 · 4,348 · 8,397 · 8,8638-K filed 2026-07-28
Mar 31, 2026	$4.35B	Net premiums written · 4,348 · 3,649 · 3,964 · 4,348 · 4,5158-K filed 2026-04-28
Dec 31, 2025	$3.65B	Net premiums written · 3,649 · 3,964 · 4,348 · 4,515 · 3,819 · 16,476 · 15,7328-K filed 2026-02-09
Sep 30, 2025	$3.96B	Net premiums written · 3,964 · 4,348 · 4,515 · 3,819 · 4,047 · 12,827 · 11,9138-K filed 2025-10-27
Jun 30, 2025	$4.35B	Net premiums written · 3,964 · 4,348 · 4,515 · 3,819 · 4,047 · 12,827 · 11,9138-K filed 2025-10-27
Mar 31, 2025	$4.51B	Net premiums written · 3,964 · 4,348 · 4,515 · 3,819 · 4,047 · 12,827 · 11,9138-K filed 2025-10-27
Dec 31, 2024	$3.82B	Net premiums written · 3,964 · 4,348 · 4,515 · 3,819 · 4,047 · 12,827 · 11,9138-K filed 2025-10-27

Mortgage insurance in force (IIF)

$477.23B at Sep 30, 2026

The filings read for this page do not define this measure.

Mortgage insurance in force (IIF), as first reported, with the line it was read from
Period ended	Figure	Filing text
Sep 30, 2026	$477.23B	Total · $477,227 · 100.0% · $478,881 · 100.0% · $480,084 · 100.0% · $484,607 · 100.0% · $494,951 · 100.0%8-K filed 2026-10-27
Jun 30, 2026	$478.88B	Total · $478,881 · 100.0% · $480,084 · 100.0% · $484,607 · 100.0% · $494,951 · 100.0% · $496,667 · 100.0%8-K filed 2026-07-28
Mar 31, 2026	$480.08B	Total · $480,084 · 100.0% · $484,607 · 100.0% · $494,951 · 100.0% · $496,667 · 100.0% · $494,772 · 100.0%8-K filed 2026-04-28
Dec 31, 2025	$484.61B	Total · $484,607 · 100.0% · $494,951 · 100.0% · $496,667 · 100.0% · $494,772 · 100.0% · $501,149 · 100.0%8-K filed 2026-02-09
Sep 30, 2025	$494.95B	Total · $494,951 · 100.0% · $496,667 · 100.0% · $494,772 · 100.0% · $501,149 · 100.0% · $511,110 · 100.0%8-K filed 2025-10-27
Jun 30, 2025	$496.67B	Total · $494,951 · 100.0% · $496,667 · 100.0% · $494,772 · 100.0% · $501,149 · 100.0% · $511,110 · 100.0%8-K filed 2025-10-27
Mar 31, 2025	$494.77B	Total · $494,951 · 100.0% · $496,667 · 100.0% · $494,772 · 100.0% · $501,149 · 100.0% · $511,110 · 100.0%8-K filed 2025-10-27
Dec 31, 2024	$501.15B	Total · $494,951 · 100.0% · $496,667 · 100.0% · $494,772 · 100.0% · $501,149 · 100.0% · $511,110 · 100.0%8-K filed 2025-10-27

Reading notes

Figures are shown as first reported. If a later filing prints a different figure for the same period, both appear. A figure marked ≈ or shown in words is how the company itself states it, not an estimate of ours. Companies change definitions over time, so compare periods with the quoted definition in mind. Periods that failed our checks are left out, so gaps are expected.

This page shows the latest 8 periods of each metric.